The best replacement for ist is est.

The best alternatives to ist are rated as following:
★★★★★  est
★★★★  pst
★★★★  gmt
★★★  cst
★★  edt
★★  saw
★★  er
★★  pots
★  isst
★  cet
★  utc
★  bst
★  sind
★  cdt
★  pdt
★  us time
  cst time
  est time difference
  vitz
  ust
  est time
  singapore time
  cst time zone
  australian time
  nust
  ism

Your alternative for ist is not listed? Suggest!
Speaking about ist, one probably shouldn't forget about gmt.

Other search terms related to ist and their ratings are:
★★★★★ gmt
★★★★ est
★★★★ gmt time
★★★ utc
★★★ uk time
★ pst
You have in mind a companion for ist and it is not yet here? Propose!



Google Trends

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ist
est
pst