The ITF today confirmed the calendar dates for Fed Cup by BNP Paribas in 2013.
World Group and World Group II first round
World Group semifinals, World Group and World Group II play-offs
World Group Final
This year's World Group semifinals are taking place on 21-22 April, with Russia hosting Serbia in Moscow and Czech Republic taking on Italy in Ostrava.
The World Group and World Group II play-offs, which decide promotion and relegation between the different divisions of Fed Cup, are also being played on the same weekend.
The team nominations - when the captains name the players in their side - will be announced on the Fed Cup website on 11 April.