High-Level Timeline
By end-of-day Nov 4 - Plan, create/update test scripts in ALM. (SAP Business Areas)
End of day production snapshot from 9/20/2021 to be used to refresh SF3 and SH1 environments
End of day production snapshot from 10/18/2021 to be used to refresh SH2 environments
Refer to calendar for detailed time frames
2021 SAP Support Pack Upgrade - Calendar View
Oct 15-25: SF3 upgrade
Oct 22 at 5PM: start of SF2 restricted window
Oct 25-28: SF2 upgrade
Oct 26 at 5PM: start of SH2 restricted window
Oct 27-Nov 3: SH2 refresh and upgrade
Nov 4-5: IS&T Controlled Payroll Test
Nov 8-30: SH2 business testing
Dec 1 -Dec 3 - Uptime Production Cut-over Activities - 
Dec 3-Dec 5 - Go-live weekend! (start Friday at 5pm)
Dec 6 - Upgraded  PS1 is ready for use
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SAP Scheduled Upgrades - Ancillary Systems
ERP Target
  
ERP:
-- EHP8 for ERP 6.0 SPS 17 w/HR SP 0098
with -- SAP KERNEL 7.53 64-BIT UNICODE PL 801
with -- SMERP 630_740 SP 0008
with -- SMFND 630_740 SP 0008
  
NetWeaver/GRC:
-- NetWeaver 7.52 SPS 09
with -- GRC Access Control 12.0 SPS 14
with -- SAP KERNEL 7.53 64-BIT UNICODE PL 801
  
NetWeaver/ADS:
-- NetWeaver 750 SPS22 w/JVM 8.1.080 and XI3RDPARTY SP22
  
SAP Mobile: