"Normal trading on NSE in all segments will continue from Thursday, May 2, 2019. Wednesday, May 1, 2019 is a trading holiday on account of May Day," the bourse said in a statement.
Sebi's orders would do not affect its functioning as a recognised stock exchange, the statement added.
The watchdog passed five separate orders, together running into 400 pages, related to the co-location case, wherein some entities allegedly got preferential access in high frequency trading.
Strict action has also been taken against some present and past executives of the exchange and some stock brokers.