Steps to reproduce:
We are facing the same issue as ZBX-22557 when creating scheduled reports in Zabbix 6.0.18.

The report seems to work fine when running manually.

Result:

4067995:20230605:111853.570 Starting Zabbix Server. Zabbix 6.0.18 
(revision d2032721bc8).
4067995:20230605:111853.570 ****** Enabled features ******
4067995:20230605:111853.570 SNMP monitoring:           YES
4067995:20230605:111853.570 IPMI monitoring:           YES
4067995:20230605:111853.570 Web monitoring:            YES
4067995:20230605:111853.570 VMware monitoring:         YES
4067995:20230605:111853.570 SMTP authentication:       YES
4067995:20230605:111853.570 ODBC:                      YES
4067995:20230605:111853.570 SSH support:               YES
4067995:20230605:111853.570 IPv6 support:              YES
4067995:20230605:111853.570 TLS support:               YES
4067995:20230605:111853.570 ******************************
4067995:20230605:111853.570 using configuration file: 
/etc/zabbix/zabbix_server.conf
4067995:20230605:111853.582 current database version 
(mandatory/optional): 06000000/06000020
4067995:20230605:111853.582 required mandatory version: 06000000
4067996:20230605:111853.589 starting HA manager
4067996:20230605:111853.593 HA manager started in active mode
4067995:20230605:111853.594 server #0 started [main process]
4067998:20230605:111853.596 server #2 started configuration syncer #1
4067997:20230605:111853.597 server #1 started service manager #1
4068010:20230605:111853.720 server #3 started alert manager #1
4068011:20230605:111853.720 server #4 started alerter #1
4068013:20230605:111853.721 server #6 started alerter #3
4068014:20230605:111853.721 server #7 started preprocessing manager #1
4068015:20230605:111853.722 server #8 started preprocessing worker #1
4068017:20230605:111853.722 server #10 started preprocessing worker #3
4068012:20230605:111853.723 server #5 started alerter #2
4068019:20230605:111853.724 server #12 started lld worker #1
4068022:20230605:111853.724 server #15 started timer #1
4068016:20230605:111853.724 server #9 started preprocessing worker #2
4068020:20230605:111853.725 server #13 started lld worker #2
4068023:20230605:111853.725 server #16 started http poller #1
4068018:20230605:111853.726 server #11 started lld manager #1
4068021:20230605:111853.727 server #14 started housekeeper #1
4068028:20230605:111853.727 server #21 started history syncer #4
4068034:20230605:111853.728 server #27 started poller #2
4068033:20230605:111853.728 server #26 started poller #1
4068031:20230605:111853.730 server #24 started self-monitoring #1
4068029:20230605:111853.730 server #22 started escalator #1
4068035:20230605:111853.730 server #28 started poller #3
4068027:20230605:111853.732 server #20 started history syncer #3
4068024:20230605:111853.732 server #17 started discoverer #1
4068025:20230605:111853.732 server #18 started history syncer #1
4068039:20230605:111853.733 server #32 started poller #7
4068040:20230605:111853.733 server #33 started poller #8
4068041:20230605:111853.733 server #34 started poller #9
4068032:20230605:111853.736 server #25 started task manager #1
4068030:20230605:111853.736 server #23 started proxy poller #1
4068036:20230605:111853.737 server #29 started poller #4
4068044:20230605:111853.737 server #37 started poller #12
4068053:20230605:111853.737 server #45 started poller #20
4068037:20230605:111853.738 server #30 started poller #5
4068038:20230605:111853.739 server #31 started poller #6
4068026:20230605:111853.739 server #19 started history syncer #2
4068048:20230605:111853.740 server #41 started poller #16
4068049:20230605:111853.740 server #42 started poller #17
4068050:20230605:111853.740 server #43 started poller #18
4068042:20230605:111853.741 server #35 started poller #10
4068043:20230605:111853.741 server #36 started poller #11
4068046:20230605:111853.741 server #39 started poller #14
4068047:20230605:111853.741 server #40 started poller #15
4068055:20230605:111853.741 server #47 started trapper #1
4068054:20230605:111853.742 server #46 started unreachable poller #1
4068052:20230605:111853.742 server #44 started poller #19
4068045:20230605:111853.743 server #38 started poller #13
4068058:20230605:111853.743 server #48 started trapper #2
4068059:20230605:111853.743 server #49 started trapper #3
4068062:20230605:111853.743 server #51 started trapper #5
4068060:20230605:111853.744 server #50 started trapper #4
4068064:20230605:111853.744 server #53 started icmp pinger #2
4068065:20230605:111853.745 server #54 started icmp pinger #3
4068068:20230605:111853.745 server #56 started icmp pinger #5
4068072:20230605:111853.745 server #57 started icmp pinger #6
4068067:20230605:111853.746 server #55 started icmp pinger #4
4068073:20230605:111853.746 server #58 started icmp pinger #7
4068063:20230605:111853.746 server #52 started icmp pinger #1
4068076:20230605:111853.746 server #60 started icmp pinger #9
4068079:20230605:111853.748 server #63 started icmp pinger #12
4068080:20230605:111853.748 server #64 started icmp pinger #13
4068075:20230605:111853.748 server #59 started icmp pinger #8
4068078:20230605:111853.750 server #62 started icmp pinger #11
4068084:20230605:111853.750 server #68 started icmp pinger #17
4068077:20230605:111853.750 server #61 started icmp pinger #10
4068085:20230605:111853.750 server #69 started icmp pinger #18
4068081:20230605:111853.752 server #65 started icmp pinger #14
4068086:20230605:111853.752 server #70 started icmp pinger #19
4068082:20230605:111853.752 server #66 started icmp pinger #15
4068087:20230605:111853.753 server #71 started icmp pinger #20
4068083:20230605:111853.753 server #67 started icmp pinger #16
4068088:20230605:111853.753 server #72 started alert syncer #1
4068089:20230605:111853.753 server #73 started history poller #1
4068090:20230605:111853.754 server #74 started history poller #2
4068091:20230605:111853.755 server #75 started history poller #3
4068092:20230605:111853.756 server #76 started history poller #4
4068093:20230605:111853.756 server #77 started history poller #5
4068096:20230605:111853.757 server #78 started availability manager #1
4068097:20230605:111853.757 server #79 started report manager #1
4068103:20230605:111853.758 server #82 started trigger housekeeper #1
4068106:20230605:111853.758 server #83 started odbc poller #1
zabbix_server [4068097]: ERROR [file and function: 
<time.c,tm_add_seconds>, revision:d2032721bc8, line:104] Something 
impossible has just happened.
4068097:20230605:111853.759 === Backtrace: ===
4068097:20230605:111853.760 12: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_backtrace+0x51) [0x561665ec0a01]
4068097:20230605:111853.760 11: /usr/sbin/zabbix_server: report manager 
#1 started(+0x210cae) [0x561665eeccae]
4068097:20230605:111853.760 10: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_tm_round_up+0x95) [0x561665eecef5]
4068097:20230605:111853.760 9: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_get_report_nextcheck+0x1b5) [0x561665ee27d5]
4068097:20230605:111853.760 8: /usr/sbin/zabbix_server: report manager 
#1 started(+0xaba66) [0x561665d87a66]
4068097:20230605:111853.760 7: /usr/sbin/zabbix_server: report manager 
#1 started(report_manager_thread+0x190f) [0x561665d8aa6f]
4068097:20230605:111853.760 6: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_thread_start+0x24) [0x561665ec3044]
4068097:20230605:111853.760 5: /usr/sbin/zabbix_server: report manager 
#1 started(+0x745a0) [0x561665d505a0]
4068097:20230605:111853.760 4: /usr/sbin/zabbix_server: report manager 
#1 started(MAIN_ZABBIX_ENTRY+0xa03) [0x561665d519a3]
4068097:20230605:111853.760 3: /usr/sbin/zabbix_server: report manager 
#1 started(daemon_start+0x16d) [0x561665ec05fd]
4068097:20230605:111853.760 2: /usr/sbin/zabbix_server: report manager 
#1 started(main+0x4b7) [0x561665d489b7]
4068097:20230605:111853.760 1: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f974ff39083]
4068097:20230605:111853.760 0: /usr/sbin/zabbix_server: report manager 
#1 started(_start+0x2e) [0x561665d4fa3e]
zabbix_server [4068097]: ERROR [file and function: 
<time.c,tm_add_seconds>, revision:d2032721bc8, line:104] Something 
impossible has just happened.
4068097:20230605:111853.760 === Backtrace: ===
4068097:20230605:111853.761 12: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_backtrace+0x51) [0x561665ec0a01]
4068097:20230605:111853.761 11: /usr/sbin/zabbix_server: report manager 
#1 started(+0x210cae) [0x561665eeccae]
4068097:20230605:111853.761 10: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_tm_round_up+0xb9) [0x561665eecf19]
4068097:20230605:111853.761 9: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_get_report_nextcheck+0x1b5) [0x561665ee27d5]
4068097:20230605:111853.761 8: /usr/sbin/zabbix_server: report manager 
#1 started(+0xaba66) [0x561665d87a66]
4068097:20230605:111853.761 7: /usr/sbin/zabbix_server: report manager 
#1 started(report_manager_thread+0x190f) [0x561665d8aa6f]
4068097:20230605:111853.761 6: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_thread_start+0x24) [0x561665ec3044]
4068097:20230605:111853.761 5: /usr/sbin/zabbix_server: report manager 
#1 started(+0x745a0) [0x561665d505a0]
4068097:20230605:111853.761 4: /usr/sbin/zabbix_server: report manager 
#1 started(MAIN_ZABBIX_ENTRY+0xa03) [0x561665d519a3]
4068097:20230605:111853.761 3: /usr/sbin/zabbix_server: report manager 
#1 started(daemon_start+0x16d) [0x561665ec05fd]
4068097:20230605:111853.761 2: /usr/sbin/zabbix_server: report manager 
#1 started(main+0x4b7) [0x561665d489b7]
4068097:20230605:111853.761 1: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f974ff39083]
4068097:20230605:111853.761 0: /usr/sbin/zabbix_server: report manager 
#1 started(_start+0x2e) [0x561665d4fa3e]
zabbix_server [4068097]: ERROR [file and function: 
<time.c,tm_add_seconds>, revision:d2032721bc8, line:104] Something 
impossible has just happened.
4068097:20230605:111853.761 === Backtrace: ===
4068097:20230605:111853.761 12: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_backtrace+0x51) [0x561665ec0a01]
4068097:20230605:111853.761 11: /usr/sbin/zabbix_server: report manager 
#1 started(+0x210cae) [0x561665eeccae]
4068097:20230605:111853.761 10: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_tm_round_up+0x79) [0x561665eeced9]
4068097:20230605:111853.761 9: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_get_report_nextcheck+0x1b5) [0x561665ee27d5]
4068097:20230605:111853.761 8: /usr/sbin/zabbix_server: report manager 
#1 started(+0xaba66) [0x561665d87a66]
4068097:20230605:111853.761 7: /usr/sbin/zabbix_server: report manager 
#1 started(report_manager_thread+0x190f) [0x561665d8aa6f]
4068097:20230605:111853.761 6: /usr/sbin/zabbix_server: report manager 
#1 started(zbx_thread_start+0x24) [0x561665ec3044]
4068097:20230605:111853.761 5: /usr/sbin/zabbix_server: report manager 
#1 started(+0x745a0) [0x561665d505a0]
4068097:20230605:111853.761 4: /usr/sbin/zabbix_server: report manager 
#1 started(MAIN_ZABBIX_ENTRY+0xa03) [0x561665d519a3]
4068097:20230605:111853.761 3: /usr/sbin/zabbix_server: report manager 
#1 started(daemon_start+0x16d) [0x561665ec05fd]
4068097:20230605:111853.761 2: /usr/sbin/zabbix_server: report manager 
#1 started(main+0x4b7) [0x561665d489b7]
4068097:20230605:111853.761 1: 
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f974ff39083]
4068097:20230605:111853.761 0: /usr/sbin/zabbix_server: report manager 
#1 started(_start+0x2e) [0x561665d4fa3e]
4068101:20230605:111853.857 server #81 started report writer #2
4068098:20230605:111853.858 server #80 started report writer #1

Also, in the frontend we have an error with the report:

Cannot calculate report start time: [75] Value too large for defined 
data type

Expected:

Clear error on what the user needs to input and/or prevention of thread crash.